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Machine A and Machine B are each used to manufacture 660 [#permalink]
18 May 2006, 18:34
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Machine A and Machine B are each used to manufacture 660 sprockets. It takes machine A 10 hours longer to produce 660 sprockets than machine B. Machine B produces 10% more sprockets per hour than machine A. How many sprockets per hour does machine A produce
This took me a long time to calculate and figure out. Does anyone have a quick method that you can show me?
Source suggested backsolving due to time constraints.